Rotary sprinkler.



I T. s. & J. E. STEWART.

ROTARY SPRINKLER. I APPLICATION FILED mm: 6,1907.

Patented 0015.6,1908.

Sum/Mow WWSE, 'fi

THE NORRIS PETFRS 50., WASHINGYON, D C.

23 i in eaaeo ITED A E onmol THOMAS SGOTT STEWART AND JAMES ELDERSTEWART, OF SALTSBURG, PENNSYLVANIA.

ROTARY SPRINKLER.

Specification of Letters Patent. Application filed June 6, 1907. SerialNo. 377,528.

Patented Oct. 6, 1908.

v1ce' articularly adapted for the sprinkling.

of 00 e in coke ovens, this particular invention being an improvement onthe one for which patent was granted us Novemberl 5th, 1887, No.373,417."

The object of the present invention is the provision of a rotarysprinkling head consisting of but few and simple parts, which will beautomatic init's action and will distribute the water evenly to thepoints desired, and which will be practica and efficient in everyparticular.

Another object of our invention is the pro-' vision of a sprinklingdevice which may be made at a low cost, the parts of which areadjustable to take up for wear, and one which may be used equally aswell for a great variety of purposes.

With the above and other objects in view, our invention consists of asupply pipe having outlet openings and provided with a depending conicalstud or projection, a rotary sprinkling shell, and means for journalingthe shell to the depending stud on the supply 1 e. P lhe inventionfurther comprises a sprinkler embodying certain other novel features ofconstruction, combination and arrangement of arts substantially asdisclosed herein and as illustrated in the accompanying drawings, inwhich:

Figure 1, is a sectional view of a coke oven showing our improvedsprinkler head mounted for operation therein. Fig. 2, is a longitudinalsectional view of the device. Fig. 3, is a cross sectional view of the srinkler taken on line 33 of Fig. 2. Fig. 4,1s a broken detail view ofthe lower ortion of the supply 1pc showing the out et openings therein.Fig. 5, is a cross sectional view of the sprinkler head on line 55 of.Fig. 2, showing the tangential arrangement of the exit slots.

In the drawings: the numeral 1, designates the body portion of thedevice which is in the form of a sleeve or pipe, either interiorly orexteriorly threaded at its upper end as at 2,

for connection with the supply pipe 3. The body portion at some distancefrom its upper end is formed with the inwardly beveled overhangingshoulder 1, the tubular body portion being reduced in diameter from theshoulder downward. The body portion is further provided with the closedlower end 5, having the conical stud or projection 6, dependingtherefrom. As shown in the longitudinal sectional view, longitudinalexit slots 7 ,are formed in the walls at the lower end of the bodyportion, these slots being obliquely disposed or set at an angle withrespect to the radii of the pipe. The material of the pipe in which theexit slots are formed is preferably depressed inwardly as shown in Fig.2, to provide the proper thickness to allow the slots being placed at asufiicie'nt incline, and the mouths of the slots are preferably recessedfrom the surface of the pipe to afford sufficient clearance for thewater when issuing from the slots.

The sprinkler head itself consists of a hollow globular shell 10, whichat its upper end is formed with a contracted boss or neck portion 11, tofit loosely over the contracted body portion of device, the neck havinga beveled edge 12, to engage and interlock with thebeveled shoulder 4..The sprinkling shell is provided at its lower end with an inwardlyextending conical stud 13, adapted to abut against the depending stud onthe end of the pipe portion. At the extreme lower end, the shell isformed with a concave seat or recess 14, and in its upper portion, theshell is formed with interior paddle blades or vanes 15, adapted to becontacted by the fluid issuing from the exit openings in the pipe. Theshell is also formed with the perforations 16, therein the perforationsbeing larger in the central portion of the shell and smaller at itslower end to insure an even distribution of the liquid.

Both the depending stud on the pipe and the internal stud on the shellare formed with freely rotate. The cone is adjustably held in place bymeans of the nut 20 on the end of the bolt and a lock nut 21, may beemployed to secure the nut in adjusted position. A cross pin or key 22,may be passed through the extended end of the supporting bolt as anadditional safeguard for holding the parts in adjusted position.

The operation of the device is as follows: The water issues through theslots in the pipe extension in tangential jets which by their impactagainst the interior vanes in the shell, cause the shell to rotate at aspeed in accordance with the pressure of the water. The water leaves theshell through the perforations therein and as the openings are graduatedin size from the center downward, it is evenly spread over the surfaceto be sprinkled. Should the parts become loose by reason of wear, thenuts on the end of the supporting bolt may be tightened to take up anylost motion. The sprinkler is extremely simple as it consists of but twomain parts, the pipe extension and shell, so that it is very strong anddurable and may be manufactured at a low cost.

From the foregoing description taken in connection with the drawings themany ad vantages and usefulness of our improved sprinkler will bereadily appreciated and it will be evident that we have produced adevice which fully accomplishes all the results herein set forth as theobjects of our invention.

WVe claim:

A sprinkler comprising a pipe having a closed lower end and a frustoconical stud depending therefrom, the pipe having a beveled undercutshoulder near its end and being of reduced diameter from the undercutshoulder to the end, there being tangentially arranged slots in thewalls of the pipe extending from the closed end upward, the material inwhich the slots are formed. being thickened and depressed inwardly andthe mouth of each slot being below the surface of the pipe shell havingan internal upwardly projecting frusto conical stud in its lower portionopposite the depending stud on the pipe, an external boss at the lowerend of said shell provided with a concave seat, a supporting bolt passeddownward through a bore formed in the conical studs and having its headresting on the closed end of the pipe, said head being rounded to directthe flow into the slots, a cone on the lower end of the bolt engagingthe conical seat in the boss of the shell, lock nuts for holding thecone in place, and a cross key passed through the bolt to secure thelock nuts.

In testimony whereof we ailix our signatures in presence of twowitnesses.

THOMAS SCOTT CTE\VAR'1.. JAMES ELDER S'.l.E\VAltl.

\Vitncsses J. C. Moons, OLIVE EWING.

